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National Repository of Grey Literature 25 records found  beginprevious21 - 25  jump to record: Search took 0.01 seconds. 
Fluorescenční mikroskopie a analýza obrazu mikroporušení hornin
 Ščučka, Jiří ; Kožušníková, Alena ; Obara, B.
The paper presents analytical methods used at the Institute of Geonics ASCR for quantitative analyses of micro-fracturing arising in rocks under various loading conditions in laboratory. Primarily optical fluorescence microscopy and image analysis of sections saturated by fluorescence dye are used to these purposes. The full-automatic image analysis method for determination of intensity and distribution of micro-cracks in rock specimens is presented in the paper as well as the formerly used manually procedure.
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Disintegration of concrete and rocks by modulated water jet: laboratory experiments
 Sitek, Libor ; Foldyna, Josef ; Ščučka, Jiří
Problem of preparation of concrete and rock surfaces before repair using modulated water jet is a subject of the paper. Selected results of laboratory tests of disintegration of various types of concrete as well as rocks are presented and compared with results of concrete and rock disintegration by means of continuous water jet under the same operating conditions.
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Interaction of laser beam with rocks
 Hlaváč, L. M. ; Martinec, Petr ; Jančárek, A.
Interaction between laser beam and rocks was studied. Two types of laser beam was used in experiment. Continuous laser with high power and pulsing laser with low power.
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Very low to low grade metamorphism in sedimentary rocks: an example from Barrandian Proterozoic, Czechoslovakia (Illite, chlorite, kerogen, metabasite mineralogy and textural development)
 Suchý, Václav ; Hyršl, J.
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The effect of grain size and other fabric parameters on the acoustic emission characteristics of stressed granitic rocks
 Přikryl, R. ; Lokajíček, Tomáš
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National Repository of Grey Literature : 25 records found   beginprevious21 - 25  jump to record:
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